ANAHEIM, CALIF. — The other day at Rams Park, Los Angeles quarterback Dieter Brock intimated that the Rams haven't lived up to all the obligations of his $2.1 million contract.

It is a disillusioned Brock who leads the Rams against the Dallas Cowboys (10-6) today in the NFC Divisional Playoff Game. His unhappiness has nothing to do with money -- the Rams haven't missed a payment.

When Brock came out of the Canadian Football League cold to talk contract with the Rams last spring, LA brass promised him the team would pass more. Hinted it really would give Eric Dickerson more chances to work on his blocking.

Brock should have gotten it all in writing.

The Rams, specifically Coach John Robinson, welched on the deal, to hear Brock tell it. ''Our offense hasn't done what we talked about in the off- season,'' he said.

Brock, 34, threw 365 passes this season, far more than Jeff Kemps' 284 attempts last year. But the kind of football Brock is used to playing, 365 throws just gets a guy's arm loose.

In the wild, wide-open spaces of the CFL, where teams pass to set up the pass, Brock attempted more than 400 passes a season eight of his 11 years in the league. Four times he put it up more than 500 times, including a CFL- record 566 in 1981 with the Winnipeg Blue Bombers.

Brock figures he might as well have played in a sling in his first NFL season. Football people raved about the uncanny strength of Brock's arm when the Rams were courting him. A line from veteran CFL scout Jack Gotta was the most quoted: ''Dieter can throw a marshmallow through a tornado.''

Brock didn't need much of an arm to hand off, which he did 292 times to Dickerson, who prominently figures into the passing of Brock's passing.

Brock finds it difficult to argue with Robinson's system and its success. The Rams (11-5) won the NFC West title for the first time since 1979.

What galls Brock is the heat he has taken all season from fans and media and to a lesser extent from Robinson. Critics say that Brock has hardly provided the answer to the Rams' long-running quarterback drama, pointing to his immobility (54 sacks) and questionable ability to read defenses.

Brock says it's a Catch-22: People haven't seen the real Dieter Brock because he hasn't been able to do what he does best enough -- throw the football.

''I feel I've done a good job this year,'' said Brock, who completed 218 passes for 2,658 yards and 16 touchdowns.

Brock says he must have done something right -- he finished as the No. 3- ranked passer in the NFC and set a Rams record for highest completion percentage (59.7).

''I ask myself what kind of stats would Dan Fouts or Dan Marino have if they only threw 20 or 22 times a game. It's hard to get a rhythm, hard to feel comfortable.''

''We're rated last in passing because we don't throw the ball less than anybody. People look at that and it's a reflection on the quarterback. People say, 'Brock must not be doing the job.' ''

Robinson admits his love for the running game -- he did coach USC, remember -- and Dickerson's superb talent have hurt Brock.''We really did intend to throw the ball more,'' Robinson said, ''but somewhere we got off the track.''